cmccabe commented on code in PR #17604:
URL: https://github.com/apache/kafka/pull/17604#discussion_r1819377099


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metadata/src/main/java/org/apache/kafka/controller/ReplicationControlManager.java:
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@@ -605,6 +605,16 @@ ControllerResult<CreateTopicsResponseData> createTopics(
         Map<ConfigResource, Map<String, Entry<OpType, String>>> configChanges =
             computeConfigChanges(topicErrors, request.topics());
 
+        int totalPartitions = 0;
+        for (CreatableTopic topic: request.topics()) {
+            if (topic.numPartitions() > 0) {
+                totalPartitions += topic.numPartitions();
+            }
+        }
+        if (totalPartitions > 10_000) {

Review Comment:
   can we use a constant for this (static final, etc. int).
   
   That would also allow us to lock it to the batch size constant



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